#
# Copyright (c) 2010-2011, Davide Cittaro
# All rights reserved.
# 
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#     * Redistributions of source code must retain the above copyright
#       notice, this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above copyright
#       notice, this list of conditions and the following disclaimer in the
#       documentation and/or other materials provided with the distribution.
#     * Neither the name of the <organization> nor the
#       names of its contributors may be used to endorse or promote products
#       derived from this software without specific prior written permission.
# 
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

from time import ctime
import sys

def timestring():
  return '[ ' + ctime() + ' ]'

def Debug(nl= 1,*msg):
  # prints to stdout and to dspchip.log (cwd) in append mode
  # nl is now a bitwiseflag:
  # 0001: add '\n'
  # 0010: add '\r'
  # 0100: add '\b'
  # 1000: get filename from the first msg argument
  # This function just writes an informational string to stderr
  retchar = ''
  if 1 & (nl >> 0):
    retchar += '\n'
  if 1 & (nl >> 1):
    retchar += '\r'
  if 1 & (nl >> 2):
    retchar += '\b'


  msgString = ' '.join([str(x) for x in  msg])
  sys.stderr.write(msgString + retchar)

